Symptoms
- Clunk, creak, or rattle noticeable only at low speed on rough or uneven roads
- Noise disappears or becomes hard to notice at higher speed
- Sound seems tied to a specific type of road surface, like gravel or broken pavement
Likely causes
- CommonWorn sway bar link or bushing that only clunks under specific suspension travelCertain suspension movements at low speed load these parts differently than smooth highway driving does.
- PossibleLoose exhaust heat shield or hanger mistaken for suspension noiseThese can rattle specifically on rough, low-speed surfaces and sound similar to suspension noise.
- PossibleWorn strut mount or bushing engaging only under certain steering and suspension combinationsSome worn mounts only make noise under specific loads found more often at low speed on rough roads.
What to do
- Try to reproduce the noise intentionally on a known rough patch at low speed to confirm it's consistent.
- Check underneath for a loose heat shield or exhaust hanger, which is a common and cheap cause of a similar sound.
- Inspect sway bar links, bushings, and strut mounts for play or wear.
- Have a mechanic drive with you or take the car for a road test with the car on a lift afterward to reproduce and trace the noise.
- Repair or replace whichever component is confirmed to be the source.
Tools and parts
Sway bar end linkSearch: “sway bar end link for [your car model]”
When to call a pro
A road test with a mechanic, followed by a lift inspection, is the most reliable way to catch a noise that only appears under specific low-speed conditions.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.